This function imports an Object Storage Service (OSS) object to a raster object in AnalyticDB for PostgreSQL.
Syntax
raster ST_ImportFrom(cstring chunkTableName,
cstring url,
cstring storageOption default '{}',
cstring importOption default '{}');Parameters
| Parameter | Description |
|---|---|
| chunkTableName | The name of the chunk table. The name must comply with the table naming conventions of AnalyticDB for PostgreSQL. |
| url | The URL of the imported OSS object. For more information, see the description of the url parameter in ST_CreateRast. |
Description
The following table lists the supported raster formats.
| Format | Full name |
|---|---|
| BMP | Microsoft Windows Device Independent Bitmap(.bmp) |
| EHdr | ESRI .hdr Labelled |
| ENVI | ENVI .hdr Labelled Raster |
| GTiff | TIFF/BigTIFF/GeoTIFF(.tif) |
| HFA | Erdas Imagine .img |
| RST | Idrisi Raster Format |
| INGR | Intergraph Raster Format |
| NetCDF | Network Common Data Form |
| AAIGrid | Arc/Info ASCII Grid |
| AIG | Arc/Info Binary Grid |
| GIF | Graphics Interchange Format |
| PNG | Portable Network Graphics (.png) |
| JPEG | JPEG JFIF File Format |
Examples
Select ST_ImportFrom('chunk_table','OSS://<ak>:<ak_secret>@oss-cn-beijing-internal.aliyuncs.com/mybucket/data/image.tif');
-- Specify an OSS object that is in NetCDF and contains a subset.
Select ST_ImportFrom('chunk_table','OSS://<ak>:<ak_secret>@oss-cn-beijing-internal.aliyuncs.com/mybucket/data/image.nc:hcc');